Improved evaporating-pan for saccharine juices



J. V- HARTER.

EVAPORATING PAN.

M my M qPaten ted Dec. 17, 1861.

"UNITED STATES PATENT OFFICE.

J. V. HARTER, OF PLYMOUTH, ILLINOIS.

IMPROVED EVAPORATlNG-PA'N FOR SACCHARINE JUICES.

To all whom it may concern.-

Be it known that I, J. V. HARTER, of Plymouth, in the county of Hancock and State of Illinois, have invented certain new and useful Improvements in Evaporators 5 and- I do hereby declare the following to be a full, clear, and'exact description of the same, reference being had to the accompanying drawings, making a part of thisspecification, in w hich- 'Figure 1 is a plan of my invention. Fig. 2 is a longitudinal section taken at the line a: :1 Fig. 1. vFig. 3 is a' transverse section of the plantaken at the line 1 3 Fig. l.

Simi lar letters of reference indicate corre sponding'parts' in the several figures.

This invention consists in an arrangement for preventing theli'ability of decomposition or ca'rbonization of the heat while being evaporated in an open pan ox'er a-nakedfire.

To enable others to fully understand and construct my invention, I will proceed to describe it. v

A is an oblong shallow pan with outwardlysloping sides B 0, provided on top with inwardlyprojecting flanges a I), cut out at each end of the pan,-.for thcpurpose hereinafter to be leseribw.

Disa follower, fashioned on its under side so' as to conform to the bottom and sloping sides of the pan, in which it is fitted to move from end to end. The under side of this follower has a slot running transversely through it,-in which a slide or shoe, 6, and two springs, f 'g, are fitted, and covered with a strip of goatskin, or other suitable article, j, the springs, when the "follower is in the pan, pressing the shoe and skin against the bottom and sloping sides of the pan, and thereby forming a tight joint and preventing liquor the follower fromone side to the other. On each end, and near the top, the follower is provided with frictiol'i-rollers c d, which, as it is moved from one end of the pan to the other,

work against the under surface of the flanges a b, and serve to relieve the follower from un-' due friction and to keep its under surface in close contact with the bottom and, sides of the sirup from too great.

the sirnp by too great heat. 1 under the whole surface of the pan, the only passing beneath pan.' E is a handle attached to the follower for the purpose of moving it from end to end of the pan. F is a slide or gate covering an opening in the back end of the pan, through which the sirnp is discharged.

The operation is as follows: The pan. being set in suitable masonry and the fire built under one end, the smoke andgases pass under the pan lengthwise and escape into the fines of a chimney at the opposite end. The-follower being removed, the pan is partly filled with juice, and the evaporation allowed to proceed without interruption until the sirnp begins to get nearly thick enough to scorch, when the follower is introduced into the front part of the pan through the places cut out in the flanges, and the sirnp moved thereby to.- ward the'chimney or cooler portion of the pan and its place supplied with more juice. \Vhen thesirup in front of the'follower has attained to about 36 of the saccharometer, the gate israised and the sirnp discharged through the opening at the back end of the pan. The slide is now taken out of the back of the pan and introduced in the front end, and the same operation repeated.

The great (lifliculty heretofore experienced in evaporating in an open pan has been owing to the liability of decomposing or carbonizing The fire being way to reduce the heat therefrom was by partly extinguishing the fire.

By the abdve-described improvement the tendency of the sirnp to decomposition and carbonization is avoided by bringing the heat directly in contact only with the thin juices. What I claim as new herein, and desire to secure by Letters Patent, isg The follower l provided evith friction-rollers e (Z, springs f 9, shoe 0, and covering j, with pan A and flanges a I), when combined, arranged, and operating in the manner and .for the purpose described.

J. V. HARTER.

Witnesses:

WM. H. COLE, G. MIKEsELL. 

